Page 173 - Math Skill - 5

Perimeter, Area and Volume 171

For rectangle R: Length = (12 + 12 + 6) cm

= 30 cm
Breadth = 6 cm

Area of rectangle P = Length × Breadth

= 12 cm × 6 cm = 72 cm 2
Area of rectangle Q = Length × Breadth

= 12 cm × 6 cm = 72 cm 2

Area of rectangle R = Length × Breadth = 30 cm × 6 cm = 180 cm 2
Area of the figure = 72 cm + 72 cm + 180 cm = 324 cm .
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2
2
2
The area of the figure is 324 cm .
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Exercise 13.3

1. Find the area of the given figures.

(a) (b)

(c) (d)

Volume

The measure of the amount of space occupied by a solid figure is called its volume.
Cubes, cuboids, cylinders, cones, spheres, etc. are solid figures and thus they possess volume.

Units of Volume

The standard unit of measurement of volume is cubic metre or cubic centimetre. In daily life,
we measure the volume in cubic centimetre.